CN216099342U

CN216099342U - Drill bit capable of reducing cracking of circuit board

Info

Publication number: CN216099342U
Application number: CN202122504569.XU
Authority: CN
Inventors: 司宝玉; 杨宇环
Original assignee: Huizhou Xinzhuohui Technology Co ltd
Current assignee: Huizhou Xinzhuohui Technology Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-03-22
Anticipated expiration: 2031-10-18

Abstract

The utility model relates to the technical field of drill bits, in particular to a drill bit capable of reducing circuit board cracking. This reduce drill bit of circuit board fracture, through connecting device, cooperation setting between bottom tube and the drill bit body, before the staff used the drill bit to the drilling of circuit board, can judge whether take off the bottom tube according to circuit board thickness and soft or hard degree, change the length of drill bit, change the size of drilling, improve the device's practicality, improve work efficiency, through the lantern ring, the setting of clamping device and interior cardboard, the in-process of installation drill bit, be connected spacing ring and drill bit body, it is connected with the metal chuck department of electric drill to drive the lantern ring, and use clamping device to increase the degree of clamp of the metal chuck department of the lantern ring and electric drill, improve the fastening nature of drill bit installation.

Description

Drill bit capable of reducing cracking of circuit board

Technical Field

The utility model relates to the technical field of drill bits, in particular to a drill bit capable of reducing cracking of a circuit board.

Background

The drill bit is a tool for drilling a through hole or a blind hole in a solid material and reaming the existing hole, and the commonly used drill bits mainly comprise a twist drill, a flat drill, a center drill, a deep hole drill and a trepanning drill, and the reaming drill and the countersink drill can not drill the solid material, but can also be classified into the drill bits in a custom way.

Chinese patent publication No. CN209887702U discloses a high-speed drill bit structure of circuit board drill point, belongs to drill point technical field, including the drill bit, the surface of drill bit is equipped with the helicla flute, the surface of helicla flute is equipped with the chip groove, the one end side of drill bit is equipped with the center location drill point, the surface of center location drill point is equipped with the multiunit sawtooth, and the high-speed drill bit structure of this circuit board drill point can increase the cutting ability of center location drill point through the sawtooth for in the center location drill point digs into the work piece fast, thereby fix a position the drill bit, avoid appearing the condition of drilling skew, the piece can be followed the chip groove and discharged, avoids appearing the condition of piece jam helicla flute.

Nevertheless the utility model provides a drill bit is difficult to change the length of same drill bit, when selecting the drill bit to the condition of difference, if lack corresponding, is difficult to adjust, and the practicality is relatively poor to the fastening nature that the metal chuck department of drill bit and electric drill is connected is relatively poor, provides a drill bit that reduces the circuit board fracture for this.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a drill bit for reducing cracking of a circuit board, and solves the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a reduce drill bit of circuit board fracture, has portable spacing ring and internally mounted has connecting device's bottom tube including the middle part threaded connection on drill bit body surface, the inside joint of spacing ring has the interior cardboard of the lantern ring that can connect electric drill metal chuck, but the fixed surface of the lantern ring is connected with the clamping device of centre gripping.

Optionally, the connecting device includes a side tube fixedly connected to the inner side wall of the bottom tube, an extrusion spring of the resilient rod is fixedly connected to the inside of the side tube, and one end of the extrusion spring is fixedly connected to the inner side wall of the movable resilient rod.

Optionally, the clamping device includes a limiting plate for contacting a metal chuck of the electric drill, one side of the limiting plate is fixedly connected with an inner tube capable of moving in the outer tube, and the inner side wall of the inner tube is fixedly connected with a resettable inner spring.

Optionally, the inner side wall of the outer tube is in threaded connection with a threaded rod capable of moving the inner tube, and a through hole capable of being inserted into the inner tube is formed in the surface of the lantern ring.

Optionally, the fixed surface of the limiting ring is connected with a rotating rod for assisting rotation, and a protective sleeve for preventing skidding is arranged on the surface of the rotating rod.

Optionally, the surface of the bottom tube is provided with a limiting hole which can penetrate through the elastic rod, so that the elastic rod can penetrate through the bottom tube and be clamped with the inner side wall of the drill bit body.

(III) advantageous effects

The utility model provides a drill bit for reducing circuit board cracking, which has the following beneficial effects:

1. this reduce drill bit of circuit board fracture sets up through the cooperation between connecting device, bottom tube and the drill bit body, and before the staff used the drill bit to the drilling of circuit board, can judge whether take off the bottom tube according to circuit board thickness and soft or hard degree, change the length of drill bit, change the size of drilling, improve the device's practicality, improve staff's work efficiency.

2. This reduce drill bit of circuit board fracture, through the setting of the lantern ring, clamping device and interior cardboard, the in-process of staff installation drill bit is connected spacing ring and drill bit body, drives the lantern ring and is connected with the metal chuck department of electric drill to use clamping device to increase the degree of clamp of the metal chuck department of lantern ring and electric drill, improve the fastening nature of drill bit installation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the collar of the present invention;

FIG. 3 is a schematic view of the bottom tube structure of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 1 according to the present invention.

In the figure: 1. a drill bit body; 2. a limiting ring; 3. a connecting device; 301. a side tube; 302. a spring rod; 303. a compression spring; 4. a bottom tube; 5. a collar; 6. a clamping device; 601. a limiting plate; 602. an outer tube; 603. an inner tube; 604. an inner spring; 605. a threaded rod; 7. an inner clamping plate; 8. a through hole; 9. rotating the rod; 10. and a limiting hole.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: a drill bit for reducing circuit board cracking comprises a drill bit body 1, wherein the middle part of the surface of the drill bit body is in threaded connection with a movable limiting ring 2 and a bottom tube 4 internally provided with a connecting device 3, the connecting device 3 comprises a side tube 301 which can be fixedly connected with the inner side wall of the bottom tube 4, the inside of the side tube 301 is fixedly connected with an extrusion spring 303 of a resettable elastic rod 302, one end of the extrusion spring 303 is fixedly connected with the inner side wall of the movable elastic rod 302, through the arrangement of the connecting device 3, the elastic rod 302 in the connecting device 3 can be clamped with the inside of the drill bit body 1, the bottom tube 4 is connected with the inside of the drill bit body 1, and the length is changed;

the surface of the bottom tube 4 is provided with a limiting hole 10 which can penetrate through the elastic rod 302, so that the elastic rod 302 can penetrate through the bottom tube 4 and be clamped with the inner side wall of the drill bit body 1, the surface of the limiting ring 2 is fixedly connected with a rotating rod 9 used for assisting in rotation, the surface of the rotating rod 9 is provided with a protective sleeve used for preventing skidding, and through the arrangement of the rotating rod 9, when a worker rotates the limiting ring 2, the rotation is convenient;

the inside joint of spacing ring 2 has the interior cardboard 7 that can connect the lantern ring 5 of electric drill metal chuck, but the fixed surface of lantern ring 5 is connected with clamping device 6 of centre gripping, clamping device 6 is including the limiting plate 601 that is used for contacting the electric drill metal chuck, one side fixedly connected with of limiting plate 601 can be in the inner tube 603 that moves in outer tube 602, the inside wall fixedly connected with of inner tube 603 can reset inside spring 604, the inside wall threaded connection of outer tube 602 has the threaded rod 605 of portable inner tube 603, but the through hole 8 of grafting inner tube 603 is seted up on the surface of lantern ring 5, setting through clamping device 6, the metal chuck department of electric drill extrudes the limiting plate to the inside of lantern ring 5 earlier, then rotate threaded rod 605 in the clamping device 6, the metal chuck department that drives the electric drill of limiting plate 601 removes, increase the degree of clamp.

In the utility model, the working steps of the device are as follows:

1. firstly, before a worker drills a hole in a circuit board by using a drill bit, whether the bottom tube 4 is taken down or not can be judged according to the thickness and the hardness of the circuit board, and the length of the drill bit is changed;

2. secondly, connecting the limiting ring 2 with the drill bit body in the process of installing the drill bit by a worker;

3. then, when the limiting ring 2 is rotated, the lantern ring 5 is driven to be connected with a metal chuck of the electric drill;

4. finally, the worker rotates the threaded rod 605 in the clamping device 6 to enable the limiting plate 601 to be in contact with the metal chuck of the electric drill, and the clamping degree of the lantern ring 5 and the metal chuck of the electric drill is increased.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a reduce drill bit of circuit board fracture, has movable spacing ring (2) and bottom tube (4) that internally mounted has connecting device (3) including the middle part threaded connection on drill bit body (1) surface, its characterized in that: the inside joint of spacing ring (2) has interior cardboard (7) that can connect lantern ring (5) of electric drill metal chuck, but the fixed surface of lantern ring (5) is connected with clamping device (6) of centre gripping.

2. A drill bit for reducing cracking of a circuit board according to claim 1, wherein: connecting device (3) including can with the inside wall fixed connection's of bottom tube (4) side pipe (301), the inside fixedly connected with of side pipe (301) can reset extrusion spring (303) of bullet pole (302), the one end of extrusion spring (303) and the inside wall fixed connection of mobilizable bullet pole (302).

3. A drill bit for reducing cracking of a circuit board according to claim 1, wherein: the clamping device (6) comprises a limiting plate (601) used for contacting a metal chuck of the electric drill, one side of the limiting plate (601) is fixedly connected with an inner tube (603) capable of moving in an outer tube (602), and the inner side wall of the inner tube (603) is fixedly connected with a resettable inner spring (604).

4. A drill bit for reducing cracking of a circuit board according to claim 3, wherein: the inner side wall of the outer pipe (602) is in threaded connection with a threaded rod (605) of the movable inner pipe (603), and the surface of the lantern ring (5) is provided with a through hole (8) capable of being inserted into the inner pipe (603).

5. A drill bit for reducing cracking of a circuit board according to claim 1, wherein: the surface fixed connection of spacing ring (2) is used for assisting pivoted dwang (9), the surface of dwang (9) is equipped with and is used for skid-proof lag.

6. A drill bit for reducing cracking of a circuit board according to claim 2, wherein: the surface of the bottom tube (4) is provided with a limiting hole (10) which can penetrate through the elastic rod (302), so that the elastic rod (302) can penetrate through the bottom tube (4) and be clamped with the inner side wall of the drill bit body (1).